1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2# RUN: llc -mtriple=aarch64-unknown-unknown -o - -verify-machineinstrs -run-pass=instruction-select %s | FileCheck %s
3--- |
4  define i32 @jt_test(i32 %x) {
5  entry:
6    switch i32 %x, label %return [
7      i32 75, label %sw.bb
8      i32 34, label %sw.bb
9      i32 56, label %sw.bb
10      i32 35, label %sw.bb
11      i32 40, label %sw.bb
12      i32 4, label %sw.bb1
13      i32 5, label %sw.bb1
14      i32 6, label %sw.bb1
15    ]
16
17  sw.bb:
18    %add = add nsw i32 %x, 42
19    br label %return
20
21  sw.bb1:
22    %mul = mul nsw i32 %x, 3
23    br label %return
24
25  return:
26    %retval.0 = phi i32 [ %mul, %sw.bb1 ], [ %add, %sw.bb ], [ 0, %entry ]
27    ret i32 %retval.0
28  }
29
30...
31---
32name:            jt_test
33alignment:       4
34legalized:       true
35regBankSelected: true
36tracksRegLiveness: true
37machineFunctionInfo: {}
38jumpTable:
39  kind:            block-address
40  entries:
41    - id:              0
42      blocks:          [ '%bb.3', '%bb.3', '%bb.3', '%bb.4', '%bb.4', '%bb.4',
43                         '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
44                         '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
45                         '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
46                         '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
47                         '%bb.2', '%bb.2', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
48                         '%bb.2', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
49                         '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
50                         '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.2', '%bb.4',
51                         '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
52                         '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4',
53                         '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.4', '%bb.2' ]
54body:             |
55  ; CHECK-LABEL: name: jt_test
56  ; CHECK: bb.0.entry:
57  ; CHECK:   successors: %bb.4(0x40000000), %bb.1(0x40000000)
58  ; CHECK:   liveins: $w0
59  ; CHECK:   [[COPY:%[0-9]+]]:gpr32common = COPY $w0
60  ; CHECK:   [[COPY1:%[0-9]+]]:gpr32 = COPY $wzr
61  ; CHECK:   [[SUBSWri:%[0-9]+]]:gpr32 = SUBSWri [[COPY]], 4, 0, implicit-def $nzcv
62  ; CHECK:   [[SUBREG_TO_REG:%[0-9]+]]:gpr64common = SUBREG_TO_REG 0, [[SUBSWri]], %subreg.sub_32
63  ; CHECK:   [[SUBSXri:%[0-9]+]]:gpr64 = SUBSXri [[SUBREG_TO_REG]], 71, 0, implicit-def $nzcv
64  ; CHECK:   Bcc 8, %bb.4, implicit $nzcv
65  ; CHECK: bb.1.entry:
66  ; CHECK:   successors: %bb.3(0x2aaaaaab), %bb.4(0x2aaaaaab), %bb.2(0x2aaaaaab)
67  ; CHECK:   [[COPY2:%[0-9]+]]:gpr32 = COPY $wzr
68  ; CHECK:   [[MOVaddrJT:%[0-9]+]]:gpr64common = MOVaddrJT target-flags(aarch64-page) %jump-table.0, target-flags(aarch64-pageoff, aarch64-nc) %jump-table.0
69  ; CHECK:   early-clobber %18:gpr64, early-clobber %19:gpr64sp = JumpTableDest32 [[MOVaddrJT]], [[SUBREG_TO_REG]], %jump-table.0
70  ; CHECK:   BR %18
71  ; CHECK: bb.2.sw.bb:
72  ; CHECK:   successors: %bb.4(0x80000000)
73  ; CHECK:   [[ADDWri:%[0-9]+]]:gpr32sp = nsw ADDWri [[COPY]], 42, 0
74  ; CHECK:   B %bb.4
75  ; CHECK: bb.3.sw.bb1:
76  ; CHECK:   successors: %bb.4(0x80000000)
77  ; CHECK:   [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 3
78  ; CHECK:   [[MADDWrrr:%[0-9]+]]:gpr32 = nsw MADDWrrr [[COPY]], [[MOVi32imm]], $wzr
79  ; CHECK: bb.4.return:
80  ; CHECK:   [[PHI:%[0-9]+]]:gpr32 = PHI [[MADDWrrr]], %bb.3, [[ADDWri]], %bb.2, [[COPY1]], %bb.0, [[COPY2]], %bb.1
81  ; CHECK:   $w0 = COPY [[PHI]]
82  ; CHECK:   RET_ReallyLR implicit $w0
83  bb.1.entry:
84    liveins: $w0
85
86    %0:gpr(s32) = COPY $w0
87    %4:gpr(s32) = G_CONSTANT i32 71
88    %8:gpr(s32) = G_CONSTANT i32 3
89    %10:gpr(s32) = G_CONSTANT i32 42
90    %13:gpr(s32) = G_CONSTANT i32 0
91    %1:gpr(s32) = G_CONSTANT i32 4
92    %2:gpr(s32) = G_SUB %0, %1
93    %3:gpr(s64) = G_ZEXT %2(s32)
94    %5:gpr(s64) = G_ZEXT %4(s32)
95    %14:gpr(s32) = G_ICMP intpred(ugt), %3(s64), %5
96    %6:gpr(s1) = G_TRUNC %14(s32)
97    G_BRCOND %6(s1), %bb.4
98
99  bb.5.entry:
100    successors: %bb.3, %bb.4, %bb.2
101
102    %17:gpr(s32) = G_CONSTANT i32 0
103    %7:gpr(p0) = G_JUMP_TABLE %jump-table.0
104    G_BRJT %7(p0), %jump-table.0, %3(s64)
105
106  bb.2.sw.bb:
107    %16:gpr(s32) = G_CONSTANT i32 42
108    %11:gpr(s32) = nsw G_ADD %0, %16
109    G_BR %bb.4
110
111  bb.3.sw.bb1:
112    %15:gpr(s32) = G_CONSTANT i32 3
113    %9:gpr(s32) = nsw G_MUL %0, %15
114
115  bb.4.return:
116    %12:gpr(s32) = G_PHI %9(s32), %bb.3, %11(s32), %bb.2, %13(s32), %bb.1, %17(s32), %bb.5
117    $w0 = COPY %12(s32)
118    RET_ReallyLR implicit $w0
119
120...
121